Answer Key

1 c.

2 × 7

1 b.

5 × 23

2 b.

2 × 7 × 23

2 c.

22 × 61

3 b.

prime

3 b.

3 × 5 × 17

4 c.

26 × 3

4 b.

5 × 7 × 11

5 c.

2 × 32 × 19

5 c.

2 × 37

6 b.

7 × 29

6 b.

3 × 137

7 b.

5 × 79

7 b.

prime

8 b.

2 × 73

8 b.

22 × 109

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